INTRODUCTION. I.1 - Historical review.

Size: px
Start display at page:

Download "INTRODUCTION. I.1 - Historical review."

Transcription

1 INTRODUCTION. I.1 - Historical review. The history of electrical motors goes back as far as 1820, when Hans Christian Oersted discovered the magnetic effect of an electric current. One year later, Michael Faraday discovered the electromagnetic rotation and built the first primitive D.C. motor. Faraday went on to discover electromagnetic induction in 1831, but it was not until 1883 that Tesla invented the A.C asynchronous motor [MAR 1]. Currently, the main types of electric motors are still the same, DC, AC asynchronous and synchronous, all based on Oersted, Faraday and Tesla's theories developed and discovered more than a hundred years ago. I.1

2 Since its invention, the AC asynchronous motor, also named induction motor, has become the most widespread electrical motor in use today. At present, 67% of all the electrical energy generated in the UK is converted to mechanical energy for utilisation. In Europe the electrical drives business is worth approximately $1.0 Billion/ Annum. These facts are due to the induction motors advantages over the rest of motors. The main advantage is that induction motors do not require an electrical connection between stationary and rotating parts of the motor. Therefore, they do not need any mechanical commutator (brushes), leading to the fact that they are maintenance free motors. Induction motors also have low weight and inertia, high efficiency and a high overload capability. Therefore, they are cheaper and more robust, and less prove to any failure at high speeds. Furthermore, the motor can work in explosive environments because no sparks are produced. Taking into account all the advantages outlined above, induction motors must be considered the perfect electrical to mechanical energy converter. However, mechanical energy is more than often required at variable speeds, where the speed control system is not a trivial matter. The only effective way of producing an infinitely variable induction motor speed drive is to supply the induction motor with three phase voltages of variable frequency and variable amplitude. A variable frequency is required because the rotor speed depends on the speed of the rotating magnetic field provided by the stator. A variable voltage is required because the motor impedance reduces at low frequencies and consequently the current has to be limited by means of reducing the supply voltages [VAS 1] [MOH 1]. Before the days of power electronics, a limited speed control of induction motor was achieved by switching the three-stator windings from delta connection to star connection, allowing the voltage at the motor windings to be reduced. Induction motors are also available with more than three stator windings to allow a change of the number of pole pairs. However, a motor with several windings is more expensive because more than three connections to the motor are needed and only certain discrete speeds are available. Another alternative method of speed control can be realised by means of a wound rotor induction motor, where the rotor winding ends are brought out to slip rings. However, this method obviously removes most of the I.2

3 advantages of induction motors and it also introduces additional losses. By connecting resistors or reactances in series with the stator windings of the induction motors, poor performance is achieved. At that time the above described methods were the only ones available to control the speed of induction motors, whereas infinitely variable speed drives with good performances for DC motors already existed. These drives not only permitted the operation in four quadrants but also covered a wide power range. Moreover, they had a good efficiency, and with a suitable control even a good dynamic response. However, its main drawback was the compulsory requirement of brushes [MAR 1] [MOH 1]. With the enormous advances made in semiconductor technology during the last 20 years, the required conditions for developing a proper induction motor drive are present. These conditions can be divided mainly in two groups: The decreasing cost and improved performance in power electronic switching devices. The possibility of implementing complex algorithms in the new microprocessors. However, one precondition had to be made, which was the development of suitable methods to control the speed of induction motors, because in contrast to its mechanical simplicity their complexity regarding their mathematical structure (multivariable and non-linear) is not a trivial matter. It is in this field, that considerable research effort is devoted. The aim being to find even simpler methods of speed control for induction machines. One method, which is popular at the moment, is Direct Torque Control [VAS 2]. Historically, several general controllers has been developed: Scalar controllers: Despite the fact that "Voltage-Frequency" (V/f) is the simplest controller, it is the most widespread, being in the majority of the industrial applications. It is known as a scalar control and acts by imposing a constant relation between voltage and frequency. The structure is very simple and it is normally used without speed feedback. However, this controller doesn t achieve a good accuracy in both speed and torque I.3

4 responses, mainly due to the fact that the stator flux and the torque are not directly controlled. Even though, as long as the parameters are identified, the accuracy in the speed can be 2% (except in a very low speed), and the dynamic response can be approximately around 50ms [LEO 1] [LUD 2]. Vector Controllers: In these types of controllers, there are control loops for controlling both the torque and the flux [BOS 1]. The most widespread controllers of this type are the ones that use vector transform such as either Park or Ku. Its accuracy can reach values such as 0.5% regarding the speed and 2% regarding the torque, even when at stand still. The main disadvantages are the huge computational capability required and the compulsory good identification of the motor parameters [ROM 1]. Field Acceleration method: This method is based on maintaining the amplitude and the phase of the stator current constant, whilst avoiding electromagnetic transients. Therefore, the equations used can be simplified saving the vector transformation, which occurs in vector controllers. This technique has achieved some computational reduction, thus overcoming the main problem with vector controllers and allowing this method to become an important alternative to vector controllers [BED 5] [ROM 1] [YAM 1]. Direct Torque Control (DTC) has emerged over the last decade to become one possible alternative to the well-known Vector Control of Induction Machines. Its main characteristic is the good performance, obtaining results as good as the classical vector control but with several advantages based on its simpler structure and control diagram. DTC is said to be one of the future ways of controlling the induction machine in four quadrants [LUD 1] [VAS 2]. In DTC it is possible to control directly the stator flux and the torque by selecting the appropriate inverter state. This method still requires further research in order to improve the motor s performance, as well as achieve a better behaviour regarding environmental compatibility (Electro Magnetic Interference and energy), that is desired nowadays for all industrial applications. I.4

5 DTC main features are as follows: Direct control of flux and torque. Indirect control of stator currents and voltages. Approximately sinusoidal stator fluxes and stator currents. High dynamic performance even at stand still. The main advantages of DTC are: Absence of co-ordinate transform. Absence of voltage modulator block, as well as other controllers such as PID for motor flux and torque. Minimal torque response time, even better than the vector controllers. However, some disadvantages are also present such as: Possible problems during starting. Requirement of torque and flux estimators, implying the consequent parameters identification. Inherent torque and stator flux ripple. I.5

6 I.2 - Structure of the thesis. The work presented in this thesis is organised in six main chapters. Theses six chapters are structured as follows. Chapter 1 is entitled " Induction Motor Model. Generalities.". It introduces a mathematical model of cage rotor induction motors. Different ways of implementing these models are presented as well as some simulations corroborating its validity. It must be said that all simulations are obtained from MATLAB/Simulink. The elements of space phasor notation are also introduced and used to develop a compact notation. Chapter 2 is entitled " Direct Torque Control. Principles and Generalities.". It is devoted to introduce different Direct Torque Control (DTC) strategies. However, firstly it is summarised different induction motor controllers, such as the very well known vector control and "V/f". Once DTC is placed in this general classification, it is fully and deeply described. Finally, different methods for improving the main DTC drawbacks are introduced and studied. These methods are classified as follows: Different look up tables. Predictive methods. Fuzzy logic based systems. Moreover, a method for regulating the stator flux to its optimum value it is presented. Chapter 3 is entitled " Fuzzy Direct Torque Control". It covers a full and deep description of a Fuzzy Logic Direct Torque Controller (FLDTC) which improves its performance. At the end of the chapter simulated results are presented, which compare the classical DTC with FLDTC. Chapter 4 is entitled " Design of Experimental Induction Motor Drive System". This chapter describes the designed workbench drive. Real simulations of DTC and FLDTC are presented taking into account all the non ideal behaviour and delays of the real drive. A way to overcome the mentioned limitations is presented. I.6

7 Chapter 5 is named " Experimental Results". This chapter is focused on the real implementation of the classical DTC and FLDTC. Experimental results corroborate the correct behaviour of both controllers. An experimental comparison between both controllers is shown. Obviously, all experimental results obtained are from the workbench described in chapter 4. In Chapter 6, entitled "Conclusions", all achievements are summarised and appropriate conclusions are drawn. Finally, all PC/DSP programs used in the real implementation are listed in the appendixes. Rules used in the Fuzzy Controllers are also listed. Also, some pictures of the workbench are shown in the appendixes. I.7

8 I.3 - Aims of the thesis. The present thesis deals with the development of a Fuzzy Logic Direct Torque Controller that has improved performance compared to the classical DTC system. The main improvement has been the torque ripple reduction. Also, a stator flux optimum controller allows the FLDTC to consume the right energy from the mains, keeping the power consumption to a minimum, when again compared to the classical DTC system. This new FLDTC system is firstly designed and proved by means of simulations. Later in the thesis, experimental implementation is discussed and the results are presented. Therefore, the development of this novel induction motor controller can be separated into the following steps: Point out the DTC disadvantages. Study the possible ways to overcome them, choosing the best one (Fuzzy Logic). Develop and mathematically describe the chosen Fuzzy Logic system. Corroboration of its proper performance by means of simulation. Development of a suitable "research workbench drive". Implementation of the FLDTC to prove its proper functionality. I.8

CHAPTER 1 INTRODUCTION

CHAPTER 1 INTRODUCTION CHAPTER 1 INTRODUCTION 1.1 CONSERVATION OF ENERGY Conservation of electrical energy is a vital area, which is being regarded as one of the global objectives. Along with economic scheduling in generation

More information

Design And Analysis Of Artificial Neural Network Based Controller For Speed Control Of Induction Motor Using D T C

Design And Analysis Of Artificial Neural Network Based Controller For Speed Control Of Induction Motor Using D T C RESEARCH ARTICLE OPEN ACCESS Design And Analysis Of Artificial Neural Network Based Controller For Speed Control Of Induction Motor Using D T C Kusuma Gottapu 1, U.Santosh Kiran 2, U.Srikanth Raju 3, P.Nagasai

More information

SPEED AND TORQUE CONTROL OF AN INDUCTION MOTOR WITH ANN BASED DTC

SPEED AND TORQUE CONTROL OF AN INDUCTION MOTOR WITH ANN BASED DTC SPEED AND TORQUE CONTROL OF AN INDUCTION MOTOR WITH ANN BASED DTC Fatih Korkmaz Department of Electric-Electronic Engineering, Çankırı Karatekin University, Uluyazı Kampüsü, Çankırı, Turkey ABSTRACT Due

More information

Inverter control of low speed Linear Induction Motors

Inverter control of low speed Linear Induction Motors Inverter control of low speed Linear Induction Motors Stephen Colyer, Jeff Proverbs, Alan Foster Force Engineering Ltd, Old Station Close, Shepshed, UK Tel: +44(0)1509 506 025 Fax: +44(0)1509 505 433 e-mail:

More information

CHAPTER THREE DC MOTOR OVERVIEW AND MATHEMATICAL MODEL

CHAPTER THREE DC MOTOR OVERVIEW AND MATHEMATICAL MODEL CHAPTER THREE DC MOTOR OVERVIEW AND MATHEMATICAL MODEL 3.1 Introduction Almost every mechanical movement that we see around us is accomplished by an electric motor. Electric machines are a means of converting

More information

R13 SET - 1. b) Describe different braking methods employed for electrical motors. [8M]

R13 SET - 1. b) Describe different braking methods employed for electrical motors. [8M] Code No:RT32026 R13 SET - 1 III B. Tech II Semester Regular Examinations, April - 2016 POWER SEMICONDUCTOR DRIVES (Electrical and Electronics Engineering) Time: 3 hours Maximum Marks: 70 Note: 1. Question

More information

ESO 210 Introduction to Electrical Engineering

ESO 210 Introduction to Electrical Engineering ESO 210 Introduction to Electrical Engineering Lectures-37 Polyphase (3-phase) Induction Motor 2 Determination of Induction Machine Parameters Three tests are needed to determine the parameters in an induction

More information

CHAPTER 6 DESIGN AND DEVELOPMENT OF DOUBLE WINDING INDUCTION GENERATOR

CHAPTER 6 DESIGN AND DEVELOPMENT OF DOUBLE WINDING INDUCTION GENERATOR 100 CHAPTER 6 DESIGN AND DEVELOPMENT OF DOUBLE WINDING INDUCTION GENERATOR 6.1 INTRODUCTION Conventional energy resources are not sufficient to meet the increasing electrical power demand. The usages of

More information

CHAPTER 4 MODELING OF PERMANENT MAGNET SYNCHRONOUS GENERATOR BASED WIND ENERGY CONVERSION SYSTEM

CHAPTER 4 MODELING OF PERMANENT MAGNET SYNCHRONOUS GENERATOR BASED WIND ENERGY CONVERSION SYSTEM 47 CHAPTER 4 MODELING OF PERMANENT MAGNET SYNCHRONOUS GENERATOR BASED WIND ENERGY CONVERSION SYSTEM 4.1 INTRODUCTION Wind energy has been the subject of much recent research and development. The only negative

More information

Doubly fed electric machine

Doubly fed electric machine Doubly fed electric machine Doubly fed electric machines are electric motors or electric generators that have windings on both stationary and rotating parts, where both windings transfer significant power

More information

Artificial-Intelligence-Based Electrical Machines and Drives

Artificial-Intelligence-Based Electrical Machines and Drives Artificial-Intelligence-Based Electrical Machines and Drives Application of Fuzzy, Neural, Fuzzy-Neural, and Genetic-Algorithm-Based Techniques Peter Vas Professor of Electrical Engineering University

More information

Page 1. Design meeting 18/03/2008. By Mohamed KOUJILI

Page 1. Design meeting 18/03/2008. By Mohamed KOUJILI Page 1 Design meeting 18/03/2008 By Mohamed KOUJILI I. INTRODUCTION II. III. IV. CONSTRUCTION AND OPERATING PRINCIPLE 1. Stator 2. Rotor 3. Hall sensor 4. Theory of operation TORQUE/SPEED CHARACTERISTICS

More information

Simulation of Indirect Field Oriented Control of Induction Machine in Hybrid Electrical Vehicle with MATLAB Simulink

Simulation of Indirect Field Oriented Control of Induction Machine in Hybrid Electrical Vehicle with MATLAB Simulink Simulation of Indirect Field Oriented Control of Induction Machine in Hybrid Electrical Vehicle with MATLAB Simulink Kohan Sal Lotf Abad S., Hew W. P. Department of Electrical Engineering, Faculty of Engineering,

More information

Fachpraktikum Elektrische Maschinen. Theory of Induction Machines

Fachpraktikum Elektrische Maschinen. Theory of Induction Machines Fachpraktikum Elektrische Maschinen Theory of Induction Machines Prepared by Arda Tüysüz January 2013 Fundamentals Induction machines (also known as asynchronous machines) are by far the most common type

More information

DEPARTMENT OF EI ELECTRICAL MACHINE ASSIGNMENT 1

DEPARTMENT OF EI ELECTRICAL MACHINE ASSIGNMENT 1 It is the mark of an educated mind to be able to entertain a thought without accepting it. DEPARTMENT OF EI ELECTRICAL MACHINE ASSIGNMENT 1 1. Explain the Basic concepts of rotating machine. 2. With help

More information

CHAPTER 1 INTRODUCTION

CHAPTER 1 INTRODUCTION 1 CHAPTER 1 1.1 Motivation INTRODUCTION Permanent Magnet Brushless DC (PMBLDC) motor is increasingly used in automotive, industrial, and household products because of its high efficiency, high torque,

More information

International Journal of Advance Engineering and Research Development VECTOR CONTROL TECHNIQUE OF INDUCTION MOTOR

International Journal of Advance Engineering and Research Development VECTOR CONTROL TECHNIQUE OF INDUCTION MOTOR Scientific Journal of Impact Factor(SJIF): 3.134 e-issn(o): 2348-447 p-issn(p): 2348-646 International Journal of Advance Engineering and Research Development Volume 1,Issue 12, December -214 VECTOR CONTROL

More information

1.1 Block Diagram of Drive Components of Electric Drive & their functions. Power Processor / Modulator. Control. Unit

1.1 Block Diagram of Drive Components of Electric Drive & their functions. Power Processor / Modulator. Control. Unit Introduction Motion control is required in large number of industrial and domestic applications like transportations, rolling mills, textile machines, fans, paper machines, pumps, washing machines, robots

More information

EEE3441 Electrical Machines Department of Electrical Engineering. Lecture. Introduction to Electrical Machines

EEE3441 Electrical Machines Department of Electrical Engineering. Lecture. Introduction to Electrical Machines Department of Electrical Engineering Lecture Introduction to Electrical Machines 1 In this Lecture Induction motors and synchronous machines are introduced Production of rotating magnetic field Three-phase

More information

CHAPTER 1 INTRODUCTION

CHAPTER 1 INTRODUCTION 1 CHAPTER 1 INTRODUCTION 1.1 ELECTRICAL MOTOR This thesis address the performance analysis of brushless dc (BLDC) motor having new winding method in the stator for reliability requirement of electromechanical

More information

(d) None of the above.

(d) None of the above. Dr. Mahalingam College of Engineering and Technology, Pollachi-3 (An Autonomous Institution affiliated to Anna niversity) CCET II (2016 Regulation) Name of Programme: B.E. (EEE) Course Code & Course Title:

More information

International Journal of Advance Research in Engineering, Science & Technology

International Journal of Advance Research in Engineering, Science & Technology Impact Factor (SJIF): 3.632 International Journal of Advance Research in Engineering, Science & Technology e-issn: 2393-9877, p-issn: 2394-2444 (Special Issue for ITECE 2016) Field Oriented Control And

More information

CHAPTER 5 ACTIVE AND REACTIVE POWER CONTROL OF DOUBLY FED INDUCTION GENERATOR WITH BACK TO BACK CONVERTER USING DIRECT POWER CONTROL

CHAPTER 5 ACTIVE AND REACTIVE POWER CONTROL OF DOUBLY FED INDUCTION GENERATOR WITH BACK TO BACK CONVERTER USING DIRECT POWER CONTROL 123 CHAPTER 5 ACTIVE AND REACTIVE POWER CONTROL OF DOUBLY FED INDUCTION GENERATOR WITH BACK TO BACK CONVERTER USING DIRECT POWER CONTROL 5.1 INTRODUCTION Wind energy generation has attracted much interest

More information

General Purpose Permanent Magnet Motor Drive without Speed and Position Sensor

General Purpose Permanent Magnet Motor Drive without Speed and Position Sensor General Purpose Permanent Magnet Motor Drive without Speed and Position Sensor Jun Kang, PhD Yaskawa Electric America, Inc. 1. Power consumption by electric motors Fig.1 Yaskawa V1000 Drive and a PM motor

More information

ANALYSIS OF WIND AND PV SYSTEMS 4.1 Wind Energy Conversion Systems (WECS)

ANALYSIS OF WIND AND PV SYSTEMS 4.1 Wind Energy Conversion Systems (WECS) ANALYSIS OF WIND AND PV SYSTEMS 4.1 Wind Energy Conversion Systems (WECS) A wind energy conversion system (WECS) is composed of blades, an electric generator, a power electronic converter, and a control

More information

International Journal of Advance Research in Engineering, Science & Technology. Comparative Analysis of DTC & FOC of Induction Motor

International Journal of Advance Research in Engineering, Science & Technology. Comparative Analysis of DTC & FOC of Induction Motor Impact Factor (SJIF): 3.632 International Journal of Advance Research in Engineering, Science & Technology e-issn: 2393-9877, p-issn: 2394-2444 Volume 3, Issue 4, April -2016 Comparative Analysis of DTC

More information

International Journal of Advance Research in Engineering, Science & Technology

International Journal of Advance Research in Engineering, Science & Technology Impact Factor (SJIF): 4.542 International Journal of Advance Research in Engineering, Science & Technology e-issn: 2393-9877, p-issn: 2394-2444 Volume 4, Issue 4, April-2017 Simulation and Analysis for

More information

Design of Brushless Permanent-Magnet Machines. J.R. Hendershot Jr. T.J.E. Miller

Design of Brushless Permanent-Magnet Machines. J.R. Hendershot Jr. T.J.E. Miller Design of Brushless Permanent-Magnet Machines J.R. Hendershot Jr. T.J.E. Miller Contents 1 GENERAL INTRODUCTION l 1.1 Definitions and types of brushless motor 1 1.2 Commutation,. 4 1.3 Operation of 3-phase

More information

CHAPTER 2 SELECTION OF MOTORS FOR ELECTRIC VEHICLE PROPULSION

CHAPTER 2 SELECTION OF MOTORS FOR ELECTRIC VEHICLE PROPULSION 14 CHAPTER 2 SELECTION OF MOTORS FOR ELECTRIC VEHICLE PROPULSION 2.1 INTRODUCTION The selection of motors for electric vehicles is a major task. Since many literatures have been reported on various electric

More information

DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING

DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING QUESTION BANK 16EET41 SYNCHRONOUS AND INDUCTION MACHINES UNIT I SYNCHRONOUS GENERATOR 1. Why the stator core is laminated? 2. Define voltage regulation

More information

Generator Speed Control Utilizing Hydraulic Displacement Units in a Constant Pressure Grid for Mobile Electrical Systems

Generator Speed Control Utilizing Hydraulic Displacement Units in a Constant Pressure Grid for Mobile Electrical Systems Group 10 - Mobile Hydraulics Paper 10-5 199 Generator Speed Control Utilizing Hydraulic Displacement Units in a Constant Pressure Grid for Mobile Electrical Systems Thomas Dötschel, Michael Deeken, Dr.-Ing.

More information

H02P /00 Arrangements for stopping or slowing electric

H02P /00 Arrangements for stopping or slowing electric CPC H H02 COOPERATIVE PATENT CLASSIFICATION ELECTRICITY ( omitted) GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC

More information

Modern Motor Control Applications and Trends Tomas Krecek, Ondrej Picha, Steffen Moehrer. Public Information

Modern Motor Control Applications and Trends Tomas Krecek, Ondrej Picha, Steffen Moehrer. Public Information Modern Motor Control Applications and Trends Tomas Krecek, Ondrej Picha, Steffen Moehrer Content Introduction Electric Machines Basic and Advance Control Techniques Power Inverters and Semiconductor Requirements

More information

Low Speed Control Enhancement for 3-phase AC Induction Machine by Using Voltage/ Frequency Technique

Low Speed Control Enhancement for 3-phase AC Induction Machine by Using Voltage/ Frequency Technique Australian Journal of Basic and Applied Sciences, 7(7): 370-375, 2013 ISSN 1991-8178 Low Speed Control Enhancement for 3-phase AC Induction Machine by Using Voltage/ Frequency Technique 1 Mhmed M. Algrnaodi,

More information

Contents. Review of Electric Circuitd. Preface ;

Contents. Review of Electric Circuitd. Preface ; Preface ; Chapter 1 Review of Electric Circuitd 1.1 Introduction, 1 1.2 Direct Circuit Current, 1 1.2.1 Voltage, 3 1.2.2 Power, 3 1.2.3 Ohm's Law, 5 1.2.4 KirchhofTs Laws, 5 1.2.4.1 Kirchhoff s Current

More information

Electrical Machines II. Week 5-6: Induction Motor Construction, theory of operation, rotating magnetic field and equivalent circuit

Electrical Machines II. Week 5-6: Induction Motor Construction, theory of operation, rotating magnetic field and equivalent circuit Electrical Machines II Week 5-6: Induction Motor Construction, theory of operation, rotating magnetic field and equivalent circuit Asynchronous (Induction) Motor: industrial construction Two types of induction

More information

PAC TRAINING PUMP MOTORS

PAC TRAINING PUMP MOTORS PAC TRAINING PUMP MOTORS 1 Basics Magnet supported from above N S N S Since unlike poles repel each other, the magnet will rotate Stationary Magnet 2 Basics N S Stationary Magnet 3 Basics N N S S Stationary

More information

A Comprehensive Study on Speed Control of DC Motor with Field and Armature Control R.Soundara Rajan Dy. General Manager, Bharat Dynamics Limited

A Comprehensive Study on Speed Control of DC Motor with Field and Armature Control R.Soundara Rajan Dy. General Manager, Bharat Dynamics Limited RESEARCH ARTICLE OPEN ACCESS A Comprehensive Study on Speed Control of DC Motor with Field and Armature Control R.Soundara Rajan Dy. General Manager, Bharat Dynamics Limited Abstract: The aim of this paper

More information

Piktronik d. o. o. Cesta k Tamu 17 SI 2000 Maribor, Slovenia Fax:

Piktronik d. o. o. Cesta k Tamu 17 SI 2000 Maribor, Slovenia Fax: PIK tr nik Phone: +386-2-460-2250 Piktronik d. o. o. Cesta k Tamu 17 SI 2000 Maribor, Slovenia Fax: +386-2-460-2255 e-mail: info@piktronik.com www.piktronik.com Sensorless AC motor control for traction

More information

High starting performance synchronous motor

High starting performance synchronous motor High starting performance synchronous motor Mona F. Moussa Mona.moussa@aast.edu Yasser G. Dessouky Ygd@aast.edu Department of Electrical and Control Engineering Arab Academy for Science and Technology

More information

Keywords: DTC, induction motor, NPC inverter, torque control

Keywords: DTC, induction motor, NPC inverter, torque control Research Journal of Applied Sciences, Engineering and Technology 5(5): 1769-1773, 2013 ISSN: 2040-7459; e-issn: 2040-7467 Maxwell Scientific Organization, 2013 Submitted: July 31, 2012 Accepted: September

More information

International Journal of Scientific & Engineering Research, Volume 7, Issue 6, June ISSN

International Journal of Scientific & Engineering Research, Volume 7, Issue 6, June ISSN International Journal of Scientific & Engineering Research, Volume 7, Issue 6, June-2016 971 Speed control of Single-Phase induction motor Using Field Oriented Control Eng. Mohammad Zakaria Mohammad, A.Prof.Dr.

More information

St.MARTIN S ENGINEERING COLLEGE Dhulapally, Secunderabad

St.MARTIN S ENGINEERING COLLEGE Dhulapally, Secunderabad St.MARTIN S ENGINEERING COLLEGE Dhulapally, Secunderabad-500 014 Subject: STATIC DRIVES Class : EEE III TUTORIAL QUESTION BANK Group I QUESTION BANK ON SHORT ANSWER QUESTION UNIT-I 1 What is meant by electrical

More information

Field Oriented Control of Permanent Magnet Synchronous Motor

Field Oriented Control of Permanent Magnet Synchronous Motor Available Online at www.ijcsmc.com International Journal of Computer Science and Mobile Computing A Monthly Journal of Computer Science and Information Technology IJCSMC, Vol. 3, Issue. 3, March 2014,

More information

CHAPTER 1 INTRODUCTION

CHAPTER 1 INTRODUCTION 1 CHAPTER 1 INTRODUCTION 1.1 MOTIVATION OF THE RESEARCH Electrical Machinery is more than 100 years old. While new types of machines have emerged recently (for example stepper motor, switched reluctance

More information

Chapter 2 Literature Review

Chapter 2 Literature Review Chapter 2 Literature Review 2.1 Introduction Electrical power is the most widely used source of energy for our homes, workplaces, and industries. Population and industrial growth have led to significant

More information

QUESTION BANK SPECIAL ELECTRICAL MACHINES

QUESTION BANK SPECIAL ELECTRICAL MACHINES SEVENTH SEMESTER EEE QUESTION BANK SPECIAL ELECTRICAL MACHINES TWO MARK QUESTIONS 1. What is a synchronous reluctance 2. What are the types of rotor in synchronous reluctance 3. Mention some applications

More information

36 Sectors DTC Based on Fuzzy Logic of Sensorless Induction Motor Drives

36 Sectors DTC Based on Fuzzy Logic of Sensorless Induction Motor Drives 36 Sectors DTC Based on Fuzzy Logic of Sensorless Induction Motor Drives Habib Benbouhenni* National Polytechnic School of Oran Maurice Audin, Oran, Algeria Research Article Received date: 25/11/2017 Accepted

More information

10. Starting Method for Induction Motors

10. Starting Method for Induction Motors 10. Starting Method for Induction Motors A 3-phase induction motor is theoretically self starting. The stator of an induction motor consists of 3-phase windings, which when connected to a 3-phase supply

More information

Historical Development

Historical Development TOPIC 3 DC MACHINES DC Machines 2 Historical Development Direct current (DC) motor is one of the first machines devised to convert electrical power into mechanical power. Its origin can be traced to the

More information

Synchronous Motor Drives

Synchronous Motor Drives UNIT V SYNCHRONOUS MOTOR DRIVES 5.1 Introduction Synchronous motor is an AC motor which rotates at synchronous speed at all loads. Construction of the stator of synchronous motor is similar to the stator

More information

AC MOTOR TYPES. DESCRIBE how torque is produced in a single-phase AC motor. EXPLAIN why an AC synchronous motor does not have starting torque.

AC MOTOR TYPES. DESCRIBE how torque is produced in a single-phase AC motor. EXPLAIN why an AC synchronous motor does not have starting torque. Various types of AC motors are used for specific applications. By matching the type of motor to the appropriate application, increased equipment performance can be obtained. EO 1.5 EO 1.6 EO 1.7 EO 1.8

More information

2-marks question bank UNIT I - TRANSFORMERS UNIT II: AC MACHINES

2-marks question bank UNIT I - TRANSFORMERS UNIT II: AC MACHINES 2-marks question bank UNIT I - TRANSFORMERS 1. What is all day efficiency? 2. What are the applications of auto transformers? 3. Why transformer rating is expressed in KVA? 4. Does transformer draw any

More information

Elbtalwerk GmbH. Universität Karlsruhe Elektrotechnisches Institut. Switched Reluctance Motor. Compact High-torque Electric Motor. Current.

Elbtalwerk GmbH. Universität Karlsruhe Elektrotechnisches Institut. Switched Reluctance Motor. Compact High-torque Electric Motor. Current. Elbtalwerk GmbH Switched Reluctance Motor Compact High-torque Electric Motor Current B1 Winding A1 D4 C1 C4 Pole D1 Rotation B4 A2 Rotor tooth Shaft A4 B2 Field line D3 C2 C3 D2 Stator A3 B3 Cooling air

More information

INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING

INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING Course Name Course Code Class Branch INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad - 500 0 DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING : Static Drives : A60225 : III -

More information

Evolution of Industrial Motor Control

Evolution of Industrial Motor Control Evolution of Industrial Motor Control Loic LeCoz Email: loic.lecoz@meuk.mee.com MITSUBISHI EUROPE B.V. Travellers Lane Hatfield, Hertfordshire AL10 8XB UK http://wwww.mitsubishichips.com 2001 Embedded

More information

Project Summary Fuzzy Logic Control of Electric Motors and Motor Drives: Feasibility Study

Project Summary Fuzzy Logic Control of Electric Motors and Motor Drives: Feasibility Study EPA United States Air and Energy Engineering Environmental Protection Research Laboratory Agency Research Triangle Park, NC 277 Research and Development EPA/600/SR-95/75 April 996 Project Summary Fuzzy

More information

Speed Control of BLDC motor using ANFIS over conventional Fuzzy logic techniques

Speed Control of BLDC motor using ANFIS over conventional Fuzzy logic techniques Speed Control of BLDC motor using ANFIS over conventional Fuzzy logic techniques V.SURESH 1, JOSEPH JAWAHAR 2 1. Department of ECE, Mar Ephraem College of Engineering and Technology, Marthandam, INDIA.

More information

Technical Guide No. 7. Dimensioning of a Drive system

Technical Guide No. 7. Dimensioning of a Drive system Technical Guide No. 7 Dimensioning of a Drive system 2 Technical Guide No.7 - Dimensioning of a Drive system Contents 1. Introduction... 5 2. Drive system... 6 3. General description of a dimensioning

More information

MEBS Utilities services Department of Electrical & Electronic Engineering University of Hong Kong

MEBS Utilities services Department of Electrical & Electronic Engineering University of Hong Kong Brief comparison of induction motors with other types of motors Electric motors exhibit wide variations of speed-torque characteristics. [Adopted from EL-SHARKAWI, Mohamed A., Fundamentals of Electric

More information

2. Draw the speed-torque characteristics of dc shunt motor and series motor. (May2013) (May 2014)

2. Draw the speed-torque characteristics of dc shunt motor and series motor. (May2013) (May 2014) UNIT 2 - DRIVE MOTOR CHARACTERISTICS PART A 1. What is meant by mechanical characteristics? A curve is drawn between speed-torque. This characteristic is called mechanical characteristics. 2. Draw the

More information

Speed Control of Induction Motor using FOC Method

Speed Control of Induction Motor using FOC Method RESEARCH ARTICLE OPEN ACCESS Speed Control of Induction Motor using FOC Method Hafeezul Haq*, Mehedi Hasan Imran**, H.Ibrahim Okumus***, Mohammad Habibullah**** *(Department of Electrical & Electronic

More information

CHAPTER 3 BRUSHLESS DC MOTOR

CHAPTER 3 BRUSHLESS DC MOTOR 53 CHAPTER 3 BRUSHLESS DC MOTOR 3.1 INTRODUCTION The application of motors has spread to all kinds of fields. In order to adopt different applications, various types of motors such as DC motors, induction

More information

SENSORLESS CONTROL OF BLDC MOTOR USING BACKEMF BASED DETECTION METHOD

SENSORLESS CONTROL OF BLDC MOTOR USING BACKEMF BASED DETECTION METHOD SENSORLESS CONTROL OF BLDC MOTOR USING BACKEMF BASED DETECTION METHOD A.Bharathi sankar 1, Dr.R.Seyezhai 2 1 Research scholar, 2 Associate Professor, Department of Electrical & Electronics Engineering,

More information

Unit-II Synchronous Motor

Unit-II Synchronous Motor Unit-II Synchronous Motor CONSTRUCTION OF THREE PHASE SYNCHRONOUS MOTOR PRINCIPLE OF OPERATION Prepared By P.Priyadharshini Ap/EEE - 1 - Note: 1. The average torque exerted on the rotor of synchronous

More information

Welcome to ABB machinery drives training. This training module will introduce you to the ACS850-04, the ABB machinery drive module.

Welcome to ABB machinery drives training. This training module will introduce you to the ACS850-04, the ABB machinery drive module. Welcome to ABB machinery drives training. This training module will introduce you to the ACS850-04, the ABB machinery drive module. 1 Upon the completion of this module, you will be able to describe the

More information

Modeling the Neuro-Fuzzy Control with the Dynamic Model of the Permanent Magnet DC Motor

Modeling the Neuro-Fuzzy Control with the Dynamic Model of the Permanent Magnet DC Motor SISY 2006 4 th Serbian-Hungarian Joint Symposium on Intelligent Systems Modeling the Neuro-Fuzzy Control with the Dynamic Model of the Permanent Magnet DC Motor Ottó Búcsú, Gábor Kávai, István Kecskés,

More information

Converteam: St. Mouty, A. Mirzaïan FEMTO-ST: A. Berthon, D. Depernet, Ch. Espanet, F. Gustin

Converteam: St. Mouty, A. Mirzaïan FEMTO-ST: A. Berthon, D. Depernet, Ch. Espanet, F. Gustin Permanent Magnet Design Solutions for Wind Turbine applications Converteam: St. Mouty, A. Mirzaïan FEMTO-ST: A. Berthon, D. Depernet, Ch. Espanet, F. Gustin Outlines 1. Description of high power electrical

More information

Transient Analysis of Offset Stator Double Sided Short Rotor Linear Induction Motor Accelerator

Transient Analysis of Offset Stator Double Sided Short Rotor Linear Induction Motor Accelerator Transient Analysis of Offset Stator Double Sided Short Rotor Linear Induction Motor Accelerator No. Fred Eastham Department of Electronic and Electrical Engineering, the University of Bath, Bath, BA2 7AY,

More information

Fuzzy based STATCOM Controller for Grid connected wind Farms with Fixed Speed Induction Generators

Fuzzy based STATCOM Controller for Grid connected wind Farms with Fixed Speed Induction Generators Fuzzy based STATCOM Controller for Grid connected wind Farms with Fixed Speed Induction Generators Abstract: G. Thrisandhya M.Tech Student, (Electrical Power systems), Electrical and Electronics Department,

More information

Pretest Module 21 Units 1-3 AC Generators & Three-Phase Motors

Pretest Module 21 Units 1-3 AC Generators & Three-Phase Motors Pretest Module 21 Units 1-3 AC Generators & Three-Phase Motors 1. What are the two main parts of a three-phase 2. Which part of a three-phase squirrel-cage induction motor is a hollow core? 3. What are

More information

Renewable Energy Systems 13

Renewable Energy Systems 13 Renewable Energy Systems 13 Buchla, Kissell, Floyd Chapter Outline Generators 13 Buchla, Kissell, Floyd 13-1 MAGNETISM AND ELECTROMAGNETISM 13-2 DC GENERATORS 13-3 AC SYNCHRONOUS GENERATORS 13-4 AC INDUCTION

More information

Modelling and Simulation Analysis of the Brushless DC Motor by using MATLAB

Modelling and Simulation Analysis of the Brushless DC Motor by using MATLAB International Journal of Innovative Technology and Exploring Engineering (IJITEE) Modelling and Simulation Analysis of the Brushless DC Motor by using MATLAB G.Prasad, N.Sree Ramya, P.V.N.Prasad, G.Tulasi

More information

Real-time Simulation of Electric Motors

Real-time Simulation of Electric Motors Real-time Simulation of Electric Motors SimuleD Developments in the electric drive-train have the highest priority, but all the same proven development methods are not consequently applied. For example

More information

DHANALAKSHMI SRINIVASAN COLLEGE OF ENGINEERING AND TECHNOLOGY MAMALLAPURAM, CHENNAI

DHANALAKSHMI SRINIVASAN COLLEGE OF ENGINEERING AND TECHNOLOGY MAMALLAPURAM, CHENNAI DHANALAKSHMI SRINIVASAN COLLEGE OF ENGINEERING AND TECHNOLOGY MAMALLAPURAM, CHENNAI -603104 DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING QUESTION BANK VII SEMESTER EE6501-Power system Analysis

More information

FATIMA MICHAEL COLLEGE OF ENGINEERING & TECHNOLOGY Senkottai Village, Madurai Sivagangai Main Road, Madurai

FATIMA MICHAEL COLLEGE OF ENGINEERING & TECHNOLOGY Senkottai Village, Madurai Sivagangai Main Road, Madurai Department of Mechanical Engineering QUESTION BANK SUBJECT NAME: ELECTRICAL DRIVES AND CONTROL YEAR / SEM: II / III UNIT I INTRODUCTION PART-A (2 MARKS) 1. Define Drives 2. Define Electric Drives. 3. What

More information

CHAPTER 5 FAULT AND HARMONIC ANALYSIS USING PV ARRAY BASED STATCOM

CHAPTER 5 FAULT AND HARMONIC ANALYSIS USING PV ARRAY BASED STATCOM 106 CHAPTER 5 FAULT AND HARMONIC ANALYSIS USING PV ARRAY BASED STATCOM 5.1 INTRODUCTION Inherent characteristics of renewable energy resources cause technical issues not encountered with conventional thermal,

More information

SYLLABUS. osmania university UNIT - I UNIT - II UNIT - III UNIT - IV CHAPTER - 1 : PRINCIPLES OF ELECTRO-MECHANICAL ENERGY CONVERSION CHAPTER - 2 :

SYLLABUS. osmania university UNIT - I UNIT - II UNIT - III UNIT - IV CHAPTER - 1 : PRINCIPLES OF ELECTRO-MECHANICAL ENERGY CONVERSION CHAPTER - 2 : i UNIT - I SYLLABUS osmania university UNIT - II CHAPTER - 1 : PRINCIPLES OF ELECTRO-MECHANICAL ENERGY CONVERSION Energy in Magnetic System, Field Energy and Mechanical Force, Direction of Mechanical Force

More information

Three-Phase Induction Motor With Frequency Inverter

Three-Phase Induction Motor With Frequency Inverter Objectives Experiment 9 Three-Phase Induction Motor With Frequency Inverter To be familiar with the 3-phase induction motor different configuration. To control the speed of the motor using a frequency

More information

CHAPTER 3 TRANSIENT STABILITY ENHANCEMENT IN A REAL TIME SYSTEM USING STATCOM

CHAPTER 3 TRANSIENT STABILITY ENHANCEMENT IN A REAL TIME SYSTEM USING STATCOM 61 CHAPTER 3 TRANSIENT STABILITY ENHANCEMENT IN A REAL TIME SYSTEM USING STATCOM 3.1 INTRODUCTION The modeling of the real time system with STATCOM using MiPower simulation software is presented in this

More information

Modelling and Simulation of DFIG with Fault Rid Through Protection

Modelling and Simulation of DFIG with Fault Rid Through Protection Australian Journal of Basic and Applied Sciences, 5(6): 858-862, 2011 ISSN 1991-8178 Modelling and Simulation of DFIG with Fault Rid Through Protection F. Gharedaghi, H. Jamali, M. Deisi, A. Khalili Dashtestan

More information

2014 ELECTRICAL TECHNOLOGY

2014 ELECTRICAL TECHNOLOGY SET - 1 II B. Tech I Semester Regular Examinations, March 2014 ELECTRICAL TECHNOLOGY (Com. to ECE, EIE, BME) Time: 3 hours Max. Marks: 75 Answer any FIVE Questions All Questions carry Equal Marks ~~~~~~~~~~~~~~~~~~~~~~~~~~

More information

PHY 152 (ELECTRICITY AND MAGNETISM)

PHY 152 (ELECTRICITY AND MAGNETISM) PHY 152 (ELECTRICITY AND MAGNETISM) ELECTRIC MOTORS (AC & DC) ELECTRIC GENERATORS (AC & DC) AIMS Students should be able to Describe the principle of magnetic induction as it applies to DC and AC generators.

More information

DC CIRCUITS ELECTROMAGNETISM

DC CIRCUITS ELECTROMAGNETISM DC CIRCUITS 1. State and Explain Ohm s Law. Write in brief about the limitations of Ohm s Law. 2. State and explain Kirchhoff s laws. 3. Write in brief about disadvantages of series circuit and advantages

More information

3rd International Conference on Material, Mechanical and Manufacturing Engineering (IC3ME 2015)

3rd International Conference on Material, Mechanical and Manufacturing Engineering (IC3ME 2015) 3rd International Conference on Material, Mechanical and Manufacturing Engineering (IC3ME 2015) A High Dynamic Performance PMSM Sensorless Algorithm Based on Rotor Position Tracking Observer Tianmiao Wang

More information

RESEARCH OF THE DYNAMIC PRESSURE VARIATION IN HYDRAULIC SYSTEM WITH TWO PARALLEL CONNECTED DIGITAL CONTROL VALVES

RESEARCH OF THE DYNAMIC PRESSURE VARIATION IN HYDRAULIC SYSTEM WITH TWO PARALLEL CONNECTED DIGITAL CONTROL VALVES RESEARCH OF THE DYNAMIC PRESSURE VARIATION IN HYDRAULIC SYSTEM WITH TWO PARALLEL CONNECTED DIGITAL CONTROL VALVES ABSTRACT The researches of the hydraulic system which consist of two straight pipelines

More information

Technical Article. How improved magnetic sensing technology can increase torque in BLDC motors. Roland Einspieler

Technical Article. How improved magnetic sensing technology can increase torque in BLDC motors. Roland Einspieler Technical How improved magnetic sensing technology can increase torque in BLDC motors Roland Einspieler How improved magnetic sensing technology can increase torque in BLDC motors Roland Einspieler Across

More information

Whitepaper Dunkermotoren GmbH

Whitepaper Dunkermotoren GmbH Whitepaper Dunkermotoren GmbH BG MOTORS WITH FIELD-ORIENTED CONTROL DR. BRUNO BASLER HEAD OF R&D PREDEVELOPMENT I DUNKERMOTOREN GMBH Dunkermotoren GmbH I Allmendstr. 11 I D-79848 Bonndorf I www.dunkermotoren.de

More information

Mechatronics Chapter 10 Actuators 10-3

Mechatronics Chapter 10 Actuators 10-3 MEMS1049 Mechatronics Chapter 10 Actuators 10-3 Electric Motor DC Motor DC Motor DC Motor DC Motor DC Motor Motor terminology Motor field current interaction Motor commutator It consists of a ring of

More information

Neuro-Fuzzy Controller of a Sensorless PM Motor Drive for Washing Machines

Neuro-Fuzzy Controller of a Sensorless PM Motor Drive for Washing Machines 4 th Intr. Conf. On Systems, Signals & Devices 19-22 March 2007 Hammamat, Tunisia Neuro-Fuzzy Controller of a Sensorless PM Motor Drive for Washing Machines Paper No.: SSD07-SAC-1117 Dr. Kasim M. Al-Aubidy,

More information

TYPES OF SINGLE PHASE INDUCTION MOTOR EBOOK

TYPES OF SINGLE PHASE INDUCTION MOTOR EBOOK 28 March, 2018 TYPES OF SINGLE PHASE INDUCTION MOTOR EBOOK Document Filetype: PDF 275.98 KB 0 TYPES OF SINGLE PHASE INDUCTION MOTOR EBOOK So this is the reason of using capacitor in the single phase induction

More information

Question Bank ( ODD)

Question Bank ( ODD) Programme : B.E Question Bank (2016-2017ODD) Subject Semester / Branch : EE 6703 SPECIAL ELECTRICAL MACHINES : VII-EEE UNIT - 1 PART A 1. List the applications of synchronous reluctance motors. 2. Draw

More information

INTERNATIONAL JOURNAL OF ADVANCED RESEARCH IN ENGINEERING AND TECHNOLOGY (IJARET)

INTERNATIONAL JOURNAL OF ADVANCED RESEARCH IN ENGINEERING AND TECHNOLOGY (IJARET) INTERNATIONAL JOURNAL OF ADVANCED RESEARCH IN ENGINEERING AND TECHNOLOGY (IJARET) International Journal of Advanced Research in Engineering and Technology (IJARET), ISSN 0976 ISSN 0976-6480 (Print) ISSN

More information

Permanent Magnet Synchronous Motor. High Efficiency Industrial Motors

Permanent Magnet Synchronous Motor. High Efficiency Industrial Motors VoltPro is a new industrial motor range to meet high efficiency needs of industry by higher level of IE4 efficiency class. Main advantage of this product is cost effective solution ensured by using standard

More information

CHAPTER 2 MODELLING OF SWITCHED RELUCTANCE MOTORS

CHAPTER 2 MODELLING OF SWITCHED RELUCTANCE MOTORS 9 CHAPTER 2 MODELLING OF SWITCHED RELUCTANCE MOTORS 2.1 INTRODUCTION The Switched Reluctance Motor (SRM) has a simple design with a rotor without windings and a stator with windings located at the poles.

More information

Induction machine characteristics and operation. Induction Machines

Induction machine characteristics and operation. Induction Machines Induction Machines 1.1 Introduction: An essential feature of the operation of the synchronous machine is that the rotor runs at the same speed as the rotating magnetic field produced by the stator winding.

More information

Fault Rid Through Protection of DFIG Based Wind Generation System

Fault Rid Through Protection of DFIG Based Wind Generation System Research Journal of Applied Sciences, Engineering and Technology 4(5): 428-432, 212 ISSN: 24-7467 Maxwell Scientific Organization, 212 Submitted: September 14, 211 Accepted: October 15, 211 Published:

More information

Standard Drives A & D SD Application Note

Standard Drives A & D SD Application Note SENSORLESS VECTOR CONTROL (SVC) Version A, 30.07.99 More detail of Vector Control principles are explained in DA64 Section 2. Some examples of SVC are given in Sections 4.2, 4.3 and 4.4. The MICROMASTER

More information

A starting method of ship electric propulsion permanent magnet synchronous motor

A starting method of ship electric propulsion permanent magnet synchronous motor Available online at www.sciencedirect.com Procedia Engineering 15 (2011) 655 659 Advanced in Control Engineeringand Information Science A starting method of ship electric propulsion permanent magnet synchronous

More information

COPYRIGHTED MATERIAL. Introduction to High Performance Drives. 1.1 Preliminary Remarks

COPYRIGHTED MATERIAL. Introduction to High Performance Drives. 1.1 Preliminary Remarks 1 Introduction to High Performance Drives 1.1 Preliminary Remarks The function of an electric drives system is the controlled conversion of electrical energy to a mechanical form, and vice versa, via a

More information